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DV'ISING DEVICE.

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ADVERTISING DEVICE.

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ADVERTISING DEVICE.

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H. K. HARRiS.

ADVERTISING DEVICE.

APPLIcMxoN FILED FEB. 5. 1914.

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DVERTISING DEVICE.

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Patented Aug. 19, 1919.

H. K. HARRIS.

ADVERTISING DEVICE.

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ADVERTISING DEVlCE.

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ADVERTISING DEVICE.

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H. K. HARRIS.

ADVERTISING DEVICE.

APPucmoN mso ma, 5.1914.

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af #sa 143 '"2' WITNESS Es iNVENTOR Patented Aug. 19, 1919.

HENRY KINGSFOBD HARRIS, OF WESTMINSTER, LONDON, ENGLAND.

ADVERTISING DEVICE.

Specification of Letters Patent.

Patented Aug. 19, 1919.

Application filed February 5, 1914. Serial No. 816,730.

To all whom it may concern lie it known that I, HENRY KINGSFORD Hixmus, a subject oi the King of England, residing at 96 Victoria street, Westminster, in the county of London, Engl-and, have invented certain new and useful Improvements in Advertising Devices; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it nppertains to make and use the same.

This invention relates to devices for making public announcements exhibiting advertisements and for other purposes of n like nature and refers to improvements upon that type ot such devices in which bands, cards, plates, disks or the like or one of a number of cards, plates or the like is brought into different positions:l or caused to take up certain positions, so as to present a. coherent announcement or the like.

The invention further refers to that type of such appara-tus in which the position into which the band, plate or the like of each unit, Where the devices are arranged into units, is caused to move, is controlled by a selecting` device so that the position in which the selecting device is set determines the particular announcement on the band, plate or the like of the particular card, plate or the like which is to be exhibited.

lilith devices of this character as previously constructed the selector has been set by means of electrical or otherimpulses so that one impulse was necessary for each step of the selector.

According to this invention I am enabled to greatly accelerate the setting of the seletors and consequently toprovide an advertisement or other device of far greater utility than has previously been proposed.

According to the essential principle underlying my invention I so arrange that by using currents of different polarity. varying strength, continuous, alternating or induced or by any desired combination of these I am enabled to set ythe selecting devices through unit distance or through any desired multiple of unit distance according to a predetermined arrangement. In some cases also the direction in which the selecting device can be moved is determined by the direction or kind of current sent to tbe device.

r t will also be ssen that in place of using electrical impulses to accomplish the above objects, these may be also accomplished by impulses or movements of other character, for example pneumatic impulses or mechanic-.1l movements, although a much wider 'ange of action can be obtained by the employment of electrical impulses.

My invention comprises various constructionnl arrangements for carrying out the above mentioned objects, together With dit'- ferent electrical methods of causing current impulses oi varying strength or kind to be transmitted, so ns to carry out the objects of the invention.

ln the gener-nl way ot' carrying out my invention and according to n method found to answer very wel] in practice, units each consisting of n frame carrying rollers upon which n hand or bands bearing letters, numorals` characters and other devices is caused to roll. are arranged side by side, each unit being furnished with a selecting device. Means are provided such as a selective switch for causing each electrical devife controlling :i selector to :be (brought into circuit so that the desired number of impulses :ire transmitted, setting the selector in the required position.

When all the selecting devices are set a controlling device or devices cause the 'bands of the units to be rolled backward or for- Xvnrd into their new position, as Well as any other actions necessary for the adequate and convenient exhibition of the advertisements or the like. This controlling device is also actuated by suitable impulses preterably by those Which cause the various units to be switched into circuit in succession, although in some cases each unit may be coutrolled from its o-Wn line, as for instance in machines controlled locally, which may be used for repetition Work and be self contained and automatic.

The transmitting device from which electrical impulses or mechanical movement is transmitted to the selecting mechanism may either be located at the same place as the exhibiting device or may be arranged at a considerable distance therefrom, but Where the control is by hand I prefer that recording apparatus shall be associated with the mechanism so that a record may be kept of the, action of the devices and the indications set by the operator.

And in order that my said invention may be better understood I will now proceed to describe the same with reference to the drawings Iaccompanying this specification, in which examples and modifications of carrying the invention into effect are shown although I wish it distinctly understood that I am not limited to these devices but may use any devices or apparatus which in operu ation will carry out the principles oi the invention.

In the drawings Figure 1 shows a front elevation of a simple form of setting mechanism for the selector.

Fig. 2 is a similar View to Fig. 1 of another setting mechanism for the selector;

Fi 3 shows a fragmentary section on the line B Fig. 2.

Fig. 4 shows a side elevation and Fig. 5 a plan of an escapement mechanism for controlling the selector.

Fig. 5a is a detail sectional view oi' a modiied spring construction for controlling the armature.

Fig. 6 shows a portion of a perforated tape for carrying out the objet-ts of the invention.

Fig. 6at is a diagrammatic View of a transmitting apparatus with which the tape is used.

Fig. 'I' shows another form of tape.

Fig. T is a diagrammatic View of a transmitting apparatus used with the tape shown in Fig. 7.

Fig. 8 shows another form of tape.

Fig. 8 is a diagrammatic view of a transmitting apparatus used with the tape shown in Fig. 8.

Fig. 9 shows another form of tape.

Fig. 10 is a detail side view of means for actuating the selector by weak and strong currents.

Fig. 11 is a similar View of another means for the same purpose.

Fig. 12 is a similar View of still another means for the same purpose.

13 is a side elevation, with the front magnet removed, of means for controlling two variations of distances by an escapement.

Fig. 14 is a plan View of the sar-ne.

Fig. 15 shows a portion of an advertising unit together with driving and controllinemechanism therefore, to illustrate a methofv by which the advertising band is caused to move in either direction according to the kind, strength or direction of the current ap lied thereto.

ig. 16 is a plan of the same.

Fi 17 shows an end elevation of a combine apparatus for controlling the sequence of operation of the units.

Fig. 18 shows a rear elevation of the Same in the direction of the arrow C.

Fig. 19 shows a front elevation of Fig.

. 17 in the direction of the arrow D', and Fig.

2O shows a view looking in the direction of arrow E, Fig. 19.

Fig. 2l shows a plan oll the top portion of Fig. 17.

Fig. is a diagram el connections of the nontrolling 11u-sans illustrated in Figs. 17 to 21.

The same numerals of reference are ein-- ployed to denote the same parts in all the views:

Referring to Fig. 1 20 shows a ratchet Wheel oi' small size, haring l0 teeth. 21 shows another ratchet wheel of large sist having forty teeth. The ratchet wheelsy 2t) and 21 are fixed together and extended into a sleeve which passes through the plate 0n the other side of the plate 22 the sleeve has mounted thereon an arm 23 provided with a. projection or roller 2l which fulfils the function of the roller 33 in my torina-r application tiled Dec. 107 1912, Serial No. l. 25 is an arm carrying a roller kept pressed against the tooth of the ratchet 2l )y means of a. spring. 26 is an arm pivot-ed at 2T and kept pulled outward by a spring 28. The arm 26 has mounted at the upper end thereof a pawl 29 normally out. ot' engagement with the ratchet 20. 3U is a spring keeping the pawl 29 pressed normally downward and 31 is a. pin which when the pawl 29 is in the position shown at Fig. 1 bears upon the inclined tail of the said pawl and holds it out of the path of the teeth ol' the ratchet 20. 32 is a link which is eonnected to the armature of an electro-magnet and when a current, for which the electromagnet is desifned is sent around said elec-- tro-magnet m tlhe attraction of the armature causes the link 32 to be pulled in the dire:- tion of the arrow and thus rocks over thel arm 2G bringing the pawl 29 into contact with one of the teeth of the ratchet 20 and causing the said ratchet to be turned through the distance equal to one toot-h.

This causes the projection 21 also to he turned through a certain distance. When the current around the electro-magnet ceases the arm 26 springs back under the action ot' the spring 28 into contact with the stop 3l.

` 35y is another arm pivoted at 36 and carrying at its upper end a spring controlled pawl 37V. 38 is a spring for normally keeping the arm 35 against the stop 39. The pawl 37 is kept clear of the teeth of the ratchet. 21 by means of a rear inclination engaging with the pin 10. 41 is a link connected to the armature of another electiomagnet When the current, for which this electro-magnet. is designed, energizes the said electro-magnet it causes the arm 35 to be pulled over bringing the pawl 37 inte engagement with thc teeth of the ratchet 21 thus causing the said ratchet to move through a distance of one tooth and consequently the ro-jection 2l; through a certain distance. will he see-,i

from the drawings` that the angular distance through which the projection 24 is caused to turn when the pawl 29 is actuated is much greater than the angular' distance through which it turns when the pawl 37 is actuated. By this means it is possible to utilize the eurrents passing around the respective electromagnets so that the projection 24 may he set in any desired position with the minimum number of impulses. For instance7 in the case under question, where, as previously explained the inner ratchet has ten teeth and the outer ratchet forty teeth, should it be required to set the projection 24 through a distance corresponding to ten unitsI oi' die -tance it is simply necessary to send two imulses to the electro-magnet. controlling the ink 32 and two impulses to the electromagnet controlling the link 4l, when the proj ertion 24 will have been sent through the required distance.

By this means it is possible to so design a perforated tape or other transmitting means that with the required means for sending impulses. currents ot one strength, direction or kind can be sent to one electron magnet and a current of another streng h. or kind can be sent to the other eleetronnagrnet over the same line.

It will be obvious therefore, that where strong and weak currents are employed the strong current will operate the electromagnet of the Weak current. and may cause the mechanism shown at Fig. l to lock. The form of device shown at Figs. 2 and 3 are designed to overcome this possible dran*- back. In these figures 42 is a ratchet wheel similar to the ratchet Wheel 20. This ratchet Wheel as will he seen from Fig. 3 has formed therewith or is mounted upon a sleeve 43, which extends right hack through the plate 44. 45 is an arm fixedly mounted upon the sleeve 43 and consequently turning with the ratchet 42. Mounted loosely7 upon the sleeve 43 in the space between the rati-het wheel and the arm 45 are two ratchet wheels 46. 47 of identical size and number ot teeth but with their teeth in opposite directions. 48 is a spring controlled pawl mounted upon the arm 45, so as to be able to engage with the teeth of the ratchetv wheel 46 and to turn with the said ratchet Wheel when it moves in a counterclockwise direction. The wheels 46 and 47 are so constructed that they are compelled to turn together. ln this case the arms 26 and 35 With their' associated parts are also employed as also the spring pressed link 25. n

When the arm 26 is actuated by the link 32, the pawl 29 comes into engagementwith the ratchet,v 42 and causes the sleeve to turn carrying with it the arm 23 and the projection 24 which latter it is desired to set.

When the arm 35 is actuated by means of the link 41- the pawl 37 which it'should be here stated only engages with the teeth of the ratchet wheel 47, causes thc said ratchet Wheel to be moved. As the ratchet wheel 47 is coupled to the wheel 46 it also causes this latter to move and the teeth oi. the ratchet 46 engage with the paivl 48 carrying around the arm 45 and consequently rotating the sleeve 43 which as be'l'ore stated moves the projection 24 through the required distance. The links 32 and -ll are to be connected with the armatures ot electro-magnets, the same as shown in Fig. l.

llf'ith this form of the device should both the arms 26 and 55 be actuated together it will be seen that there is no possibility ot' locking.

1n Figs. l and 27 4i) is a pnojection upon the arm 26 which when the said arm is moved over, only allows the ratchet wheel 20 to more through one tooth and 50 is a projcrtion on the arm 35 having a similar object with reference to the ratchet wheel 21.

Referringto Figs. 4 and 5, these show a double selector operated in the manner oi an escapement and controlled by means of a double polarized magnet 5l. 52 is the armature normally located intermediate the. poles ot the permanent magnet and retained t'ree in this position h v means oi springs 5? 5: a in the manner hereinafter described. The arn'iature 52 has pivotally mounted at the end thereof a pivot pawl 54 controlled by a spring 55. The nose ot' this pawl normally engages with the teeth of the escapement wheel 56. Mounted at one side ot the escapcment wheel 56 so as to turn therewith is a similar wheel 57 the teeth of which are of the same number as. but set intermediate to the teeth ot the wheel 56. 58 is a spring barrel. 1When a current of one direction passes to the electronnagnet 5l it causes the armature to move in one direction, when a. current of the opposite direction is sent it causes the armature to move in the opposite direction. 59 is a wheel mounted at the other side of the wheel 56 to the wheel 57 and so as to turn therewith. This toothed Wheel 59 is provided with eight teeth and the Wheels 56 and 57 each with forty teeth. 60 is a guard plate provided with recesses or slots 61 in the neighborhood of the toothed wheel 59. It is of course understood that the pressure ot' the spring in the barrel 56` tends to turn the wheels in the direction of the arrow 62, and that the nose of the paw] 54 isn'ormally in engagement with one of the teeth of the wheel 56. If now a current of one polarity is sent through the electromagnet 51'it causes the armature 52 to move in the direction of the arrow 63 as shown in Fig. 5, it also causes the nose of the pawl to leave the teeth of the wheel 56 and to come` into the path of the next succeeding;I tooth of the Wheel 57 which allows the es capement to move through half a tooth.

When the current thror h the electro magnot is broken the spring 3EL brings the pavvl back to its original position allowin the escapemcnt to complete the other ha f tooth. In this wav it will be seen that the parts have moved through unit distance4 and it will be understood that they are in connection with a. roller or projection Such as 2-1 and have, therefore moved through the required distance. l/Vhen a current of opposite direction 'to the last is sent around the electro-magnet 51 it caused to move in the direction of the arrow 0&1-, then the nose ot' thc pawl passes through one of the slots G1 in the gua-rd plate G0 behind a tooth, and the spring in the barrel allows the Wheels to turn until the next tooth, some distance away, comes into Contact with the nose of the pawl. Upon breaking the current the pa ivl passes through the slot 61 opposite this tooth and resumes its original position.

Should the current through the electromagnet be broken before the next tooth reaches the pawl it is prevented from springin;r back to whccl 5G by the portion of the guard plate 00 until it comes to the slot in the said guard plate.

At Fig. 5 is shown a modified spring construction for controlling the armature as a substitute for springs 53, 53a. In this figure the armature 52 is shown in cross section and passing through a slot 296 in the tube i297. 298 and 299 are stops against which the ends of compression springs 300 and 301 take, the other ends of the springs coming against the end plates of the tube i297.

In the normal position, the armature 52 is not acted upon by either of the springs 300 or 301 but is of such size that it just touches each of these springs.

Then the arnrature is pulled in either direction by the action of its electro-magnet it will be readily understood that it compresses one of the springs and is not influenced in the slightest by the other spring, so that.

upon the magnet being demagnetized and the paivl controlled by the armature released, the said armature is forced back to its original position. With this construction the diiiiculty of providing a strictly balanced pair of springs is obviated, and the armature always returns to its normal intermediate position.

It should be here observed that when using this type of selector it is imperative that the impulses which set the paWl into a position to release the escapement through a multiple of unit distance should be actuated first in order to insure that the pawl is opposite the slot in the guard plate.

The means for setting back this form of selector as Well as those forms of selector previously described consists of a mechanism similar to that described and shown in the heretofore mentioned application, although it is. of course obvious that any suitable mechanism for eifecting this object can be employed.

Figs. 10, 11 and 12 show means for actuating tlae selector wheel so that it is set by weak and strong currents. Referring to Fig. 10, 90 is the magnet suitably connected to the circuit. The magnet is provided with an armature 91 controlled by a spring 92. The armature 91 carries a spring-controlled pawl 93. 94 is a stop for limiting the movement of the armature. 95 is the ratchet Wheel. Dealing first With the action of the armature 91, when a Weak current is sent around the magnet 90 the amnature 91 is attracted and its paw] 93 moves the ratchet Wheel 95 around through one tooth. It is prevented from moving the ratchet through more than one tooth by coming into contact with the stop 94.

90 is another arniature at the other end of the magnet 90 controlled by a. spring 97 much stronger than the spring An extension of the armature 96 carries a spring pressed paw] 98. 99 is a stop simply mounted upon the framework o-r base plate carrying the mechanism.

When a strong current is sent around the magnet 90 the armature 96 is attracted. This causes the spring pawl 98 to engage with the teeth of the ratchet 95 and to move the said ratchet around' through a number of teeth say, fou-r. Further ino-vement of the pawl is prevented by coming into Contact with. the stop 99.

It will be observed that when the stronger current passes around the magnet 90 the armature 91 Will also be attracted bring'- ingV the pawl 93 into engagement With the ratchet Wheel but thisu however does not prevent the wheel being turned around through a multiple number of teeth as the teeth of the ratchet slip under the paWl 93 which moves outward against the action of its spr' Rlhlrring to Fig` 11, 100 is a solenoid provided with a central tube in which a movable iron c0re101 is adapted to slide.

The core 101 is connected to. a brass or other nonmagnetic rod 102 which passes up through a suitable guide and comes to rest normally beneath the end 103 of a lever 104 pivoted at 105. The lever 1.04 carries a spring controlled pawl 115 adapted to engage with the teeth of the wheel 107. 108 is a tubular sleeve resting upon the end 103 of the lever 104 and having fitting loosely therein the end of a rod 109, connected to a Weight 11'0 sliding in a casing 111. 112 is a pm in. theend Off the rod 109 which Works in slots 113 in the sleeve 108. 114 is a. compression springt In reierence tothe action. of this form of the` device, when a. weak current is sent aroundE the solenoid; the core 101 is drawn upward. causing the end ol the rod 102 to come into contact with the end 103 of the lever 104, raising the said lever so that the paw] 115 moves the Wheel 107 around through one tooth. By this time the end 103 of the lever has caused the spring 108 to be compressed and has come into contact or nearly into contact with the end of the rod 109. Any further movement upward of the lever would have to lift the weight 110 but the levers and weights are so designed that the weak current sent around the solenoid is unable to do this, thus the wheel 107 is only moved through one tooth. When, however, a stronger current is sent around the solenoid 100 the upward movement given by the core 101 is suiicient to overcome the weight 110 which is lifted upward, until a suitable stop prevents further movement. In this Way the pawl 115 moves the Wheel 107 through some desired predetermined multiple of unit distance. 116 is a roller catch for preventing any backward movement of the Wheel 107.

Referring now to F ig. 12, this shows another arrangement by means of which cur rents of tivo strengths control the movements of the selector through unit distance and a multiple of unit distance. In this case 117 is the magnet which is provided with an armature 118 the extension 119 of which comes beneath one end of a spring-controlled rod 120; the other end of the rod 120 has fast-cned thereto one end of a sleeve 121, into the other end of which fits loosely a rod 122. The rod 122 is surrounded by a compression spring 123; 124 are locking nuts. 125 is a pin Working in slots 126 in the sleeve 121. The outer end of the rod 122 is provided with a pawl 127. It will be seen that when the armature 118 is attracted, the rod 120 is pushed upward. This causes the sleeve 121 to compress the spring 123 and forceV the pawl 127 into engagement vvith the ratchet Wheel. 128 moving it aroundl through one tooth.

The magnet 117 is also provided with another armature 129, an extension of which comes below one end of a rod 130 kept pressed downward by means of a spring stronger than the spring pressing down the rod 120. The other end of the rod 130 carries a pawl 131 adapted to engage with a ratchet Wheel 132, the teeth of which are some multiple of the teeth upon the concentric ratchet 128. When the armature 129 is attracted, the paw] 131 causes the ratchet Wheel to be moved through one tooth.

The following arrangement is provided for preventing the pavvl 127 actuating the ratchet 128 when the paWl 131 is'actuated. 133 is a pivot mounted upon some suitable part of the base plate or framework, pro vided with an arm 134 adapted to come into the pathway of a stop 123.3 carried by the upper end of the rod 130.

13G 1s another arin of the lever which comes normally a short distance above a projecting pin 137- carried by the upper end of the rod 122.

lt will be seen that when the armature 118 is operated, the paul 127 can operate upon the ratchet wheel 128, but wlr n the armature 129 is attrartral the rod 13() auses the stop 135 to lift up the arm 131 of the lever which depresses the arm 13G and while the pawl 131 operates upon the ratchet wheel 132, the said arm 13G prevents the paw] 127 from operating the ratchet wheel 128. The slot 120 and spring 123 allow the action to take place as will be readily understood.

Referring now to Figs. 13 and 14; these figures show how two variations of distance are controlled by an esrxapement, although it is quite obvious that more than two varia tions of distance can be controlled, for instance several Wheels may be mounted side by side each provided with a number of teeth some multiple of the teeth of the others, and upon suitably actuating one or more pawls, the projection or other part Whirh Was being set can be allowed to move over the required distance. In these figures 138 and 139 are magnets, the armatures 140 and 141 of which are adapted, which attracted by their magnets com'e into contact With the ends of rods 142 and 143. T hese rods are kept pressed backward by suitable adjustable springs and carry at their front ends pawls 144 and 145. The rods are also provided with sliding blocks 146 of square section to prevent any rotation. These blocks carry lugs 147 provided with an adjustable screw 148, which normally rests behind one arm 150 of a bent lever, the other arm 151 of which constitutes a spring-controlled locking paWl. The arm 151 norn'lally rests against teeth of tWo ratchet Wheels 152 and 153, which are joined together, and are controlled by a spring box 154. When the current of one kind or strength is sent to the apparatus the mag net 138 is operated. This causes the rod 142 to be ushed forward, the screw projection 148 o which causes the locking pawl 151 to be removed from the teeth on the Wheel 152. The paw] 144, however, moves forward at the same time and thus escapement ratchet 152 moves around through only one tooth, as when the rod 142 again moves backward under the action of its spring, the pawl 151 is again pressed for-Ward by its spring into engagement with the teeth of the said ratchet wheel.

When a current of another strength or kind is sent to the apparatus the magnet 139 is energized. This causes the rod 143 to be pushed forward. The screw projection 148 in connection with this rod causes the locking pawl 151 to be moved out of cngagfmcnt \\'ith the teeth of thc wheel 153, the spring in the spring barrel 154 there4 upon valises the wheel 153 to turn until the next tooth is stopped by the pawl 145. Upon the rod 113 moving backward the lockingl pawl 151 again coincei into engagement with the teeth of the ratchet wheel 153.

Ailthough the action of the wheel 152 was described first it is in most vases preferable that the impulses controlling the magnets for the multiple ratchet wheel should be sent first.

In Figs. 13 and 14 is also shown a method by which the ratchet wheelsl are set back to their original position. This is effected by the following mechanism. 155 is a cani mounted upon a shaft 156 in connection with the units carrying the advertising bands or the like. The shaft 156 is caused to rotate as the bands or the like are moved forward into their exhibiting position. 157 is a roller carried by a spring-controlled slide 153. The slide 158 carries a s 1ing\'ontr llcd pawl 159 adapted as the slice is reciprocat ing 'to come into engagement with the teeth of the ratchet wheel 152. When the bands are being moved forward into their reciprorating position the ram 155 causes the slide 158 to be reciprocated and each time the slide moves forward the pawl 159 winds up the spring-controlled ratchet wheel 152 through one tooth, the pawl 151 acting as a locking pawl.

It will be understood that the particular modified constructions just described are simply examples of methods of constructing this portion of -the device according to my invention and not in any Way exhaustive, being given merely by way of illustration.

It may be remarked that in some cases where it is desired to Work sometimes one magnet alone and sonxetimcs two magnets of different types, one may have solid and brass bobbins while the other may be of soft laminated iron, former Wound. These magnets may be connected in parallel, and the alternating current would then be used for the Weak movement and would operate the laminated magnet, while a continuous current would operate both magnets.

In one arrangement a magnet of square section laminated and former wound is also so wound and connected to form a core type transformer, the secondary winding of which is coupled to a second alternating magnet. The continuous current then works tho first magnet but the induced current, on thc make and break, is not suflicient to overroine the inertia of the armature of the second magnet, which, however, is operated by the greater induction of the alternating eurrent.

In order to make the operation of the before mentioned devices better understood,

various forms of perforated tapes will he described l'or sei'lding current impulses of different direction and strength. For cxample, in Fig. 6 a portion of the tape is shown provided with the usual feeding perforations (35 in the center'. (ln the extreme left a liuc of perforations is shown headed at the top shunt next thereto another line of perforations headed -l-"` and coming at thc side thereto another line headed on the other side of the feeding perforations ('15 a line of perforations headed -l next a line headed and finally another line headed shunt,

In Fig. 6a is shown a diagram in which (56, 67, GS, 69, and 71 are the pins of a transmitting apparatus capable of completing circuits of different polarity or strength. The pins labeled -land as will be seen are connected to the motor generators each with an earth return so that two of the pins are -land two The two outer contacts as will he seen constitute a shunt on the line so that the resistances 72 and 73 are in circuit. lVhcn contact is made through perforations in the tape and the rcsistances shuntod than contart is made through the outer pin. 74 is an arm of a selecting switch more particularly described hereafter in relation to the control. his arm 74 is furnished with two conductors insulated from each other each being connected to one of the lines. Upon one line an electro-magnet is located, which aetuates the movement of the arm 74 in the manner of an electro-magnet-I escapement or ratchet.

It will be seen that the two contacts of the arm 74 work over a series of.,double contarts and that these double contacts are connected to the units shown diagrammaticallyY by small rectangles.

These units are connected to the contacts as shown and to a common earth return, co operating with the earths of the generators. In the units polarized magnets are employed, their signs being denoted on the rectangles, rcpresenting the units.

To give a concrete example of the working of this form of the device a system of notation is taken in which in order to cause the letter (l to be set, eleven impulses must be sent, the letter A four impulses, the letter B nineteen impulses. the letter L, 10 imnllscs, the letter E two im ulscs and the letter S, six impulses all in tie forward dirertion, starting from zero.

It must also be assumed that each of the units is provided with a double escapen'lent or lselecting mechanism such as any one of those shown at Figs. l to 5, and that the electro-magnet controlling the movement of five units o f distance is actuated by a .strong current and that the electro-magnet allowing the ports to move over unit distance is actuated by a Weak current, and that both llo electro-magnets in each unit are polarized with the same polarity and the polaritics of the magnets in the units are represented by the signs -land It will be observed upon studying Fig. fi that cach ol the lines is capable of being connected with a positive or negative pin through resistances or it' the shunt pin or brush is in operation, not through the rcsistances. It therefore follows that each line can have impulses sent either positive or negative and either Weak or strong.

Assuming now that the tape is being passed between the pins and their contacts, in the first position in order to set the letter C it will be Seen that two perforations are shown on the shunt line. These cut out the resistance 72 and allow the two perforations on the positive line opposite to the two shunt perforations to Cause the positive pin to send two impulses to the line and as these do not pass through the resistance these impulses are of a strong character and actuatc the electro-magnet which causes the selector to move through a distance corresponding to ten units of distance. The next perforation on'this positive line has not a perforation in the shunt line parallel thereto, so the positive pin transmits a current through the resistance 72 which is, therefore, of a weak nature and operates the electro-magnet which moves the selecting device through unit distance. In this way it will be seen that the selector for the rst unit has been set by tWo strong and one weak positive current through a distance corresponding to 11 units of distance. At the same time on the other line (see the right hand portion of Fig. 6) three strong positive impulses have been sent causing the selector in the unit marked B to move through a distance corresponding to 15 units of distance, and the tape continuing to travel four Weak impulses are sent over this line, bringing the total number of impulses up to 19, which corresponds to the setting of the letter B. At the same time as this last four impulses on the one line, four Weak negative impulses have been sent on the other line through the pin 68, which causes the selector in the unit marked A to move through four units of distance and to bring the selector into a position corresponding to the letter A.

As the band tape continues to travel the next contact in orderis one on the negative line toward the right hand side of the tape. This makes a contact through the pin and the electro-magnet 75 iS so arranged that it is actuated by a Weak negative impulse on this line. Therefore, when thi-s last mentioned contact is made the electro-magnet 7 5 is actuated and causes the arm 74 to move in the direction of the arrow and come on to the next pair of contacts. Here it will be seen that upon the tape still further moving, two strong positive impulses are sent to one line through the pin (56 which causes the selecting mechanism ot one particular unit to which the line is now connected to be moved through 10 units olt distance, thus setting Ithe selecting mechanism in a position corresponding to the letter L. At the same time upon the pin (i9 making contact one strong and one weak positive impulse is sent to the other line, which causes the selector to be set in a position corresponding to the letter S for the last positive unit. Upon the tape still continuing to travel two weak negative impulses are sent through the pin 68 and set the selector of the last unit but one into the position corresponding to the letter E. When the tape travels to the next position a weak negative impulse is sent to the electro-magnet 75, causing the arm 74 to move on to the next pair of contacts.

lVhen the advertisement which the advertising units have been exhibiting is set back to zero or starting position and again turned into the forward direction the mechanism controlling the various hands or the like will be stopped by the selectors so that the previously set word or advertisement, which 1n the present instance is the word Cables will be exhibited.

Referring now 'to Figs. 7 and 7a the tape in this case is designed for Working with two lines and each unit is provided with two polarized electro-magnets one of positive polarity and the other of negative polarity, the magnet of positive polarity being so arranged that it moves the selector or allows the escapement to move through five units of distance while the magnet of negative polarity allows the selecting device to move through one unit, of distance, or each unit may be provided with one magnet of the type, shown at Figs. 4land 5.

It will be seen that one shunted line is employed which allows a strong impulse of either polarity to be sent to line and to have an earth return by means of which the magnet 76 controls the movement of the arm 77, it being observed that the armature of this magnet is spring controlled and the amount of spring tension is such that the said armature is not actuated when too weak impulses of either polarity pass around the magnet.

In Fig. 7 positive pins 78 and 79 are connected to their source of supply and negative pins 80 and 81 to their source of supply, a pin 81al being in connection with a shunt, which may be on line or to earth.

Returning now to the tape shown in Fig.

7 the selector for the letter C is set in position as will be understood from the previous explanation by two positive impulses and one negative on one line, and on the other line concurrently the selector for the letter A is set into position by four weak negati ve impulses` the last one being strengthened by cutting out the shunted resistance 811, and consequently raus-ing' the electro-magnet 76 to be actuated. VUpon the tape continuing to more three positive impulses are sent to the lirst mentioned line and four negative which sel 'the selector in a position to subsequently allow the letter B to be brought into position. The selector for the letter L is set by two positive impulses through the pin 79, the last impulse being strengthened by cutting out the resistance through the shunt perforation and consequently operating the switch. The selector for the letter E is set on the first line by two negative impulses and the selector for the letter S is set on the other line by one positive and one negative, the last impulse being strengthened and consequently operating the switch. 1n this way the selectors for the word cables are set.

Referring now to Figs. 8 and 8a, in this case one line is employed for the setting of the selector and one line for controlling magnets determining the direction in which the selector shall move consequently the switch 8:2 is moved once for each unit.

It will be seen from the lower portion of this figure that the pin 83 which is positive, and the pin 84 which is negative, together with a shunt 85 operate the selector indicated diagrammatically by S in each of the units and that the pins 86 and 87 operate through the other line the gear for determining the direction of rotation of the selectors denoted by the letter G.

It should be observed that when a positive current is sent to the line controlling the selector, a polarized electro-magnet is operated, which moves the selecto-r through five units of distance, and when a negative current is sent, the selector is moved through a. unit distance. The switch 82 is operated in this instan-ce by the electro-magnet 88, by means of strengthening the last impulse of each setting, the armature of the magnet 8S being so arranged that it is not affected by the weak impulses which set the selectors. Upon the tape are marked F and R indieating forward and reverse The perforations of the tape indicated by F and R pass the pins 86 and 87 and cause impulses (positive or negative) to be sent to the line (other than the one previously described in reference to the pins 83, 84 and 85) for determining the direction of rotation. Proceeding with the example, the letter C is set hy two positive impulses and one negative impulse on one line the current fioiving on the other line being such that the gear is put in the forward position.

As the letter A is represented by four impulses, in order to set the unit into a position corresponding` to the position of this letter, it must be set back through a distance of 7 units of distance, presuuiiug that the last letter set in this unit was U, which is only taken as an example however, because its notation is known and must not be supposed to have any connection with the Referring to Fig. 9 this shows a simplified tape working with a single line and earth, the switch being operated by strengthening the last impulses.

The method of operation will be understood having reference to the other figures already described.

At the lower part of this ligure a perforation is shown marked T.' This may stop the motor with a magnetic switch or cut out the driving clutch or start a timing device which would restart the movement when required.

Referring to Figs. 15 and 16 in these figures is shown somewhat diagrammatirally a method by which the direction of rotation of the roller controlling the band carrying the letters or other characters is controlled by means of discriminating currents either of different polarity, strength or kind. 155 is a framework upon which are mounted brackets 156. 157 is the main driving shaft which when running is constantly turning in the direction of the arrow 158. 159 is a sleeve mounted so as to slide within certain limits upon the shaft 158 but constrained to rotate therewith by means of a projecting pin 160 projecting through the slot 161 which slot limits the movement of the sleeve 159 upon the shaft 157 in the direction of the arrow 162. Mounted upon or formed with the sleeve 159 are two toothed wheels 168 and 164 the teeth of which are formed on the faces at the edge thereof. The sleeve 159 is continued beyond one of those wheels and has formed thereon two collars between which is formed an annular recess 165. Within the annular recess 165 pins 166 upon a forked collar 167 normally rest. The forked collar is continued backward into an arm 168 and is pivoted at. 169 upon a post 170. The hottoin of the post 170 which is free to rotate has projecting;r therefrom an arm 171 at the outer end `of which is formed a sleeve 17? in which slides pin 173 constantly pressed upward by means of a spring 174. The

pin 173 passes through a slot 175 in the casing and i's provided with an enlarged portion or head 176 for the purpose hereinafter explained. The head 176 is n ormally kept pulled against the under Slde of the plate or frame 155. 177 is a toothed pinion so located that either of the toothed wheels 163 or 164 can be brought into enga ement therewith. The spindle upon wh ch the pinion 177 is mounted passes through the casing and has its bearing at 178. 179 is another pinion mounted on this spindle which gears with two large gear wheels 180 and 181. The gear wheel 180 is fixedly mounted upon a spindle 182 to whicho'ne of the large rollers 183 of the exhibiting device is fixed. The other large roller 184 is mounted upon a spindle 185 connected by means of the spring barrel 186 with the other large toothed wheel 181, the spring barrel being provided so as to compensate for the slight degree of variation of the diameters of the rollers 183 and 184 while the band carrying the numerals, letters or other characters is being wound from one roller to the other.

In the drawings the band is not shown in position but it will be readily understood that the band winds from one roller to the other. 187 is a toothed wheel mounted upon the plate 155. This toothed wheel has formed upon the upper surface thereof and mounted at the outer edge in a certain osition a hump 188 formed by two oppositely inclined portions, as will be seen from Fig. 15. 189 is a slide workin upon pins 190 by means of slots 191 ang kept pulled in to the position shown at Fig. 16 by means of a tension spring 192. 193 is a s rin controlled pawl mounted upon the slidl 18 which when the parts are in the position shown at Fig. 16 has its nose kept clear of the teeth of the wheel 187 by means of the in 194 engaging against an inclined portion 195. 196 is a roller standing somewhat above thelevel of the other parts and against which the cam 197 is adapted to take. The cam 197 is formed upon an extension of a spindle 182 and each time the roller 183 is rotated the cam 197 causes the slide 189 to be recprocated backward and forward twice thus causing the paw] 193 to operate upon the wheel 187 twice and move it through a distance of two teeth. Mounted in a bracket 198 so as to project over the wheel 187 is a lever 199. One end of the lever is formed with a double inclined projection 200 v and the other end is provided with a vrounded tail 201. The rounded tail comes above the spring controlled pin or slide 173 while the projection 200 comes in the path of the hump 188. 202 is a rod in connectlon with the armature of an electro-magnet capable of being operated by a current of one polarity'T or of a certain strength or kind while 203 is a rod in connection with another electro-magnet capable of bein operated by means of a current of a di erent polarity, strength or kind. v

`It has been omitted 'in these views for the sake of clearness to show any method of settingI the wheel 187 so that the'hump 188 is brought into position to corres ond to the number :of impulses transmit but it will be obvious that any oneof the devices shown at Figs. 1 Lto 5j can'be Vutilized for this purpose.

Assuming that the unit which the before mentioned description forms a part is exhibitin a certain numeral, letter or charac tenant? it is desired to change to another numeral, letter or character to accomplish this, one or other of the wheels 163 or 164 would have to be in gear with the pinion 177. Then upon starting the motor the rollers188 and 184 would be turned in a certain direction. At each rotation of the roller 183 the wheel 187 would be moved through two teeth as lpreviously explained thus settin back the hump 188 which has previous y been set forward according to the number of impulses transmitted to the zero position that isthe position shown in the drawings. As the hump 188approaches this position it comes beneath the projection 200 and raises this projection upward. This rocks over the lever 199 and causes the curved tail thereof to press upon the spring pin 173. This last action causes the projection 176 to be forced upon the wheel 181. On the top of this wheel a number of Hat spring plates 204 are provided with a space between the adjacent ends thereof located intermediate between which is a fixed upstanding projection 205. V 'The enlarged projection 176 rides over the next approaching spring plate 204 and forces the said spring late ownward. When it reachesthe end t ereof it immediately s rings down and the projection 205 comes into contact with it. As the parts are being partially driven and also have a certain amount of momentum and as lthe housing of the pin 173 is free Ito move to a certain extent 1n the slot 175 the lprojection 205 carries round' with it fora s distance the projection 176. This causes the arm 171 to rotate the post 170 which in turn causes the forked collar 167 to ullY upon the sleeve 159 and pull the particu ar wheel163 or 164 out of gear fromthe pinion 177 and thus sto .thedrive of the particular uiivt without liowever it will be seen stoppin fthe drive of the' main shaft 157 which it sliuld be stated is drivin a similar mechanismfor each unit. Now t e like is being exhibited y the unit and in order to exhibit a freslil letter it'is 'simply necessary to send the required numberfof impulses to set the' hump- 188 in the newfporeijluired letter or' the iso 

